Method for producing super-dry rice seeds

Abstract

The invention provides a method for producing super-dry rice seeds. The rice seeds with the water content of less than or equal to 15 percent are used as materials, and the rice seeds are heated and dried at the high temperature to obtain the super-dry rice seeds; the water content of the super-dry rice seeds is less than or equal to 5 to 7 percent; and the high-temperature heating and drying is thermostatic heating at the temperature of between 45 and 80 DEG C or continuous variable temperature heating and drying at the gradual rising temperature of between 45 and 80 DEG C or heating and drying at different temperatures of two stages. According to the method for producing the super-dry rice seeds, the lowest water content of the produced super-dry rice seeds can be below 5 percent, but the viability of the super-dry rice seeds is not obviously affected; and the production cost is low, and the rice seeds can be air-tightly stored for long time under the room temperature condition, but the germination percentage is not obviously reduced. The method also can reduce regulation and maintenance operations such as storage clearance, sterilization, ventilation, pest control, mildew resistance and the like and the storage cost so that the storage operation of the seeds is half done.

Description

technical field [0001] The invention relates to a method for producing ultra-dry rice seeds, which belongs to the field of crop seed production and storage. Background technique [0002] Rice seeds have a certain life span. After harvesting, rice seeds that have been dried naturally or artificially heated [with a water content of about 13% (indica rice) or 14.5% (japonica rice), (the following are all indica rice as an example)] at room temperature Under conventional storage conditions, with the increase of storage time, the viability of rice seeds gradually decreased, and the germination rate gradually decreased. Usually stored under conventional conditions for more than 1 year, the germination rate will be lower than 80% [Hu Jin, etc., storage characteristics and physiological and biochemical changes of hybrid rice and its three-line seeds, I. The relationship between water content and vigor during storage of different moisture seeds Variation, Seeds, 1988, (1): 11-18], a...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem that none of the existing known technologies can be realistically used in mass production of super-dry rice seeds, the present invention provides a method for producing super-dry rice seeds, which has low cost and long storage time, and can be used on a large scale in agricultural production. application